"When the reptile bites," said my friend, "its two fangs press on a small bladder at their base, and the poison is thus injected into the wound." Our naturalist rendered his explanation still clearer by pressing on one of the fangs, from the end of which oozed out an almost imperceptible drop of liquid. "How is it that the serpent does not poison itself?" asked Lucien. "In the first place, it does not chew its prey; and, secondly, its venom is only dangerous when it penetrates direct into the blood; and a man, if there is no scratch in his mouth or in the digestive tube, can swallow the poison with impunity, although a very small quantity introduced into his veins would cause immediate death." After our meal, which consisted of turtle and some palm cabbage, which in flavor resembles an artichoke, I set the example of commencing work. In less than two hours the materials for the raft had been carried to the edge of the stream, and the frail bark which was to carry us down to the plains was constructed and afloat. A little before sunset, l'Encuerado, provided with a long pole for a boat-hook, pushed it out on the water to ascertain its powers of buoyancy; and the trial having been judged satisfactory, the raft was moored, and we all lay down in front of our "Villa" to enjoy a siesta. At last, when every thing was arranged for the voyage, l'Encuerado, naked down to his waist, went behind as pilot. We gave a farewell salute to the "Villa," by a loud hurrah, which seemed to frighten our menagerie, and with a last look at the forest in which I had spent so many miserable hours the mooring was cut, and the raft floated slowly and silently down the current. The raft soon drifted into a lagoon, covered with waders and web-footed birds, which scarcely moved as we passed them, and some time was lost before we could regain the course of the stream. At length, guided by the palm-trees, our skiff glided between two banks bordered by trees, the high tops of which sheltered us with their shade. Every thing was calm around us, and we remained silent, awed by the majesty of nature. The stream flowed on in one single sheet; creepers hanging from the tree-tops drooped down into the water; while kingfishers skimmed from one shore to the other, and humming-birds, with their varied and shining plumage, fluttered about the flowers. Every now and then a low-hanging tree impeded our passage, and we had to bend down on the raft to avoid being struck by such obstacles. A mass of under-wood often hid the interior of the woods from our view; but here and there a break in the foliage allowed us a glimpse into its depths. Ebony-trees, cotton-wood, pepper-trees, and palms, were intermixed with tree-ferns, magnolias, white oaks, and willows. Here and there, too, a sunbeam marked out a vast circle of light upon the dark water, and myriads of aquatic insects, gnats, dragon-flies, and butterflies sported in the air or swam over the glittering surface.